Im with you on this mate.I used to love B.o.B aka Bobby Ray or Bob way before he hit mainstream.When he first came out he sounded so refreshing to me personally,he was very deferent.But same thing goes for Wiz Khalifa, I prefer hes old stuff to his new ****.
Once a artist hits mainstream he changes,and that kills me
That's soo true with most artist's once they have become mainstream they never stick to their original styles that made them noticed. For example 50's early stuff from get rich or die trying was soo fresh, whereas the stuff hes making now just sounds like hes not even trying. Just seems like he's looking for easy money.